One word can change the answer
A report says "the data was breached". Was it read by a stranger? Was it changed? Was it lost? Each answer needs a different fix.
Security has exact words so that people can talk about a problem without confusion. Today you learn the first group.
Key words
| Word | What it means |
|---|---|
| CIA triad | Confidentiality, integrity and availability: the three core goals of security. |
| Confidentiality | Access to data, and changes to it, are limited to authorised users. |
| Integrity | Data is kept in the right form, with no change that was not allowed. |
| Availability | Authorised users can get to the data when they need it. |
| IAAA | Identification, authentication, authorisation, accountability: four steps of access control. |
| Identification | A unique name for one person, such as a user name or an employee number. |
| Authentication | Checking that a person really is who they say. |
| Authorisation | Giving permissions to users through an access control model. |
| Accountability | Actions can be traced to one user, so you can show who sent or did what. |
| Multi-factor authentication | Proving who you are with two or more different kinds of proof. Short form: MFA. |
The cells students fill in are left blank in this preview.
By the end of this lesson
Note
I can define the CIA triad and each step of IAAA, and use the right word for a real security problem.
Starter: what you already know
Have a go
Starter: what you already know
3 questionsYour answers are marked here and are not kept. A college account keeps every student’s marks.
The CIA triad
The CIA triad is the base of every security system. It has three parts.
Confidentiality: access to data, and changes to it, are limited to authorised users.
Integrity: data stays in the right form. Nobody changes it without permission.
Availability: authorised users can get the data when they need it.
Check: which part of the triad?
Have a go
Check: which part of the triad?
4 questionsYour answers are marked here and are not kept. A college account keeps every student’s marks.